Apparatus for molding



n. ERRYI/IAN.v APPARATUS FOR MOLDING. APPLICATION FILED APR. 2. |921.-

1,430,531. Patented 0011.3,1922

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vwmto Patented Get. 3, 1922.,

DAVID BERRYMAN, OF FLORAL PARK, NEW YORK, ASSIGNOR TO AMERICAN TELE-PHONE .AND TELEGRAPH COMPANY, A COBPORATIONDF NEW YORK.

APPARATUS FOR MOLD-ING.

Application filed April 2, 1921.

Be it known that I, DAvD BERRYMAN, residing at Floral Park, yin thecounty of Nassau and Sta-te of New York, have invented certainImprovements in Apparatus for Molding, of which the following is aspecification.

This invention relatesto apparatus for molding, and more particularly toapparatus of this character which is to be used for forming lead pipecaps.

In the production of lead. pipe caps, such, for instance, as are used inconnection with telephone, telegraph and other electrical lineconstruction for sealing the upper ends of pole laterals, considerabledifficulty has been experienced in removing the iinished caps from theiron cores of the molds after the casting operation. This is due to theshrinkage of the lead While cooling which causes it to adhere tightly tothe iron core. In order to release t-he caps from the cores, it has beennecessary to jar said caps off by hammering on the tops of the cores orby employing other awkward processes which have resulted in battering upthe tops of the cores and rendering said cores unserviceable.Accordingly it is one of the principal objects of this invent-ion toprovide a simple and efficient apparatus for forming pipe caps as wellas to provide for the removal of said caps therefrom after the castingoperation. Other and further objects of the invention will hereinafterappear.

In the accompanying drawing, in which is shown one embodiment of theinvention, Figure 1 is a perspective view of the improved apparatus, aportion of which is shown in section; Fig. 2 is a vertical sectionalview thereof with the handle removed, showing the core in its raisedposition, its

. normal position being indicated by dotted lines, and Fig. 3 is a topplan view of the movable ring which is provided on the top of the core.

Similar characters of reference indicate corresponding parts throughoutthe several figures of the drawing.

Referring to the construction herein illustrated, 5 represents a casingor mold portion which is preferably of the configuration shown, ithaving a rounded periphery, tapering slightly upwardly and a baseportion of larger diameter than the other portions thereof. On the innersurface of the casing Serial No. 4158,128.

5 is a chamber 6 having a flaring side-wall 7 and a semi-elliptical wall8. At the termination yof the wall 7 is provided a flange 9 whichlextends about the surface of the chamber 6. At the bottom of the casing5, and in the center thereof, is provided an aperture 10 which extendsthrough said casing into the chamber 6.

At 11 is depicted a core which cooperates with the mold 5 in theformation ofthe pipe caps. The main surface 12 of the core correspondsin shape to the curvilinear surface of the wall 8 and integral with thesurface 12 and projecting at the bottom therefrom is a cylindrical pin13 which is adapted to fit in the aperture 10 of the casing. Acylindrical stud 13 Yis formed on the top of the core 11 and fixedthereto by means of a screw 14 is a circular cap 15. A.. disc 16 havinga central opening 17 which registers with the stud 13, is adapted tomove on said stud in a vertical direction within the clearance spacebetween the top surface of the core 11 and the bottom surface of the cap15. The disc 16 is provided with an annular shoulder 18 which is seatedon the flange 9 when the core is in position within the chamber 6, andextending downwardly from the shoulder 18 is an annular rim 19.Depressions 2O and 21 are formed on the upper surface of the disc 16,and connect with cutaway portions 22 and 23, respectively, in theshoulder 18 and rim 19, said portions providing openings through whichmolten metal may be poured into the space 24 between the surface 12 ofthe core 11 and the wall 8 of the chamber 6, as will be presentlydescribed. For the purpose of description, it may be assumed that thedepression 20 and cutaway portion 22 comprise a vent hole, while thedepression 21 and cutaway portion 23 comprise a gate.

A handle, such as indicated at 25, may be used in connection with thepresent invention, and which, for the purpose of illustration, is shownas having parallel strips of metal 26 suitably riveted or otherwiseattached to each other and terminating in a bifurcated portion 27. Eachof the forks of said bifurcated portion are provided with lugs extendingat right angles thereto which are secured tothe top of the movable disc16 by means of screws 28 and 29.

In the operation of the arrangement herein shown, the core 1l is placedin position in the chamber 6 and the molten lead is poured through thegate or cutaway portion leading into said chamber, suoli operationcontinuing until the space 24T is lled with said metal. After aninterval, during` which the lead has cooled suiiiciently to be in asolid state, the core with the lead, which is now in the form ot a cap,adhering to its surface is lifted out ot the chamber G, and the extrametal bent out of the gate and vent hole. T he pin 13 is placed on abench and by slight downward pressure on the handle 25 the disc 16 andrim 19 are caused to move downwardly and torce the cap off the core.

It will be obvious that the general principles herein disclosed may beembodied in many other organizations widely different from thoseillustrated without departing from the spirit of the invention asdeiined the 'following claims.

llhat is claimed is:

1. ln a device for forming; pipe caps, a casing, a chamber in saidcasing, acore cooperating with the chamber in the formation of saidcaps, a stud integral with said core, a disc at the top of said core andmovable on said stud, a. gate formed in said disc to permit theintroduction oit material into the chamber 'for forming said pipe caps1a handle affixed to said disc and a rim integral with said discresponsive to the depressionv ot said handle whereby a pipe cap isremoved from said core.

2. mold comprising a casing, a chamber therein provided with aperipheral flange, a core cooperatingv with said chamber in theformation or" pipe caps, a stud integral with said core, a disc movableon said stud, a shoulder and an annular rim integral with said disc, theshoulder cooperating with said flange. in limiting` the entrance ot thecore into said chamber and the rim 'functioning to remove the pipe capsfrom said core when displaced from said chamber and a gate formed insaid disc` to permit the introduction oit material igor forming` saidpipe caps.

ln testimony whereof, i have signed my name to this specification this1st day of April 1921.

DAVlD BERRYli/AN.

